LeetCode Problem 3835 | Count Subarrays With Cost Less Than or Equal to K

LeetCode Solution (C++) — Count Subarrays With Cost Less Than or Equal to K

In this video, Anirudh explains how to solve “Count Subarrays With Cost Less Than or Equal to K” on LeetCode using an efficient sliding window and prefix-based reasoning approach. This problem is a strong interview-style pattern for US tech roles and online assessments, combining subarray counting with cost constraints.

What you will learn
• How to model subarray cost efficiently
• How to use sliding window techniques to count valid subarrays
• How to maintain constraints while expanding and shrinking the window
• C++ implementation with optimal time and space complexity

Problem link
https://leetcode.com/problems/count-subarrays-with-cost-less-than-or-equal-to-k/

Keywords (US interview prep)
LeetCode, coding interview, software engineer interview, US tech interviews, online assessment, arrays, sliding window, subarrays, prefix sums, two pointers, cost constraint, C++ solution, time complexity, edge cases, interview explanation

Tags
#LeetCode #CodingInterview #InterviewPrep #SoftwareEngineering #OnlineAssessment #Algorithms #DataStructures #Arrays #SlidingWindow #TwoPointers #CPlusPlus #Cplusplus #TechJobs #USTechJobs

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